Simple Radio Circuit Diagram. It has 8 pins. First mass produced transistor radio 1954.
The simplest radio receiver known as a crystal set consists of nothing more than a coil tuning capacitor diode detector and a pair of earphones. This is a very simple am radio circuit using only two transistors. It has an op amp internally which acts as an amplifier.
Transistor q1 does the job of demodulation.
First mass produced transistor radio 1954. The non inverting pin is connected to the variable resistor of 10kohms. It has an op amp internally which acts as an amplifier. The demodulated signal will be available at the base of q1 this audio signal is coupled to the base of q2 for further amplification.
